Elitech ILD-200 Infrared Refrigerant Leak Detector is designed exclusively to make the HVACR Technician's job easier, faster, safer and more efficient. We set out to develop the best refrigerant leak detector for HVACR. The ergonomic design fits naturally in your hand. The ruggedized construction stands up to abuse most other leak detectors can't handle. The Six-hour battery life lets you work all day before recharging. The sound and light alarm allow you to work the way you want to work.